NCT05656534

Orexin Receptor Antagonists as Modulators of Threat Sensitivity in Individuals With Alcohol Use Disorder

• Status: Completed
• Phase: EARLY_Phase 1
• Study type: Interventional
• Enrollment: 81 (actual)
• Sponsor: Ohio State University · Academic / Other
• Sex: All
• Age: 18 Years – 65 Years
• Healthy volunteers: Not accepted

Summary

The goal of this double-blind clinical trial is to further explore if, how, and for whom orexin antagonism modifies brain-behavior stress targets in moderate to severe alcohol use disorder (AUD). The main questions it aims to answer are: * Does an acute dose of suvorexant (SUV) and/or daily use of SUV modify brain-behavior targets of AUD dysfunction? * Does daily SUV use change alcohol behavior and if so, is this change in behavior linked to brain-behavior change? Participants will be randomized to a treatment group (SUV or placebo) and protocol arm, electromyography (EMG) only or EMG+functional magnetic resonance imaging (fMRI). Participants will be asked to complete the following: * Baseline lab visit(s) that include the psychophysiological stress paradigm (EMG only or EMG+fMRI, dependent upon randomization). * Acute drug challenge where the participant will return to the lab to repeat the stress paradigm following administration of a single dose of either 10mg SUV or placebo. * Medication trial where participants will be instructed to take 10mg capsules of SUV or placebo orally each night before bedtime for 4-weeks. * Daily reports of medication adherence, side-effects, sleep, alcohol use, and mood will be collected via smartphones during the 4-week medication trial. * Post-treatment lab visit(s) where participants will return to the lab at the end of the medication trial and complete the same stress paradigm from baseline (EMG only or EMG+fMRI, dependent upon randomization).

Conditions

• Alcohol Use Disorder

Interventions

Type	Name	Description
DRUG	Suvorexant	This study is a double-blind study. Participants will complete an initial screening visit and pre-treatment lab visits (EMG, fMRI). Suvorexant (SUV) will be placed in opaque capsules with dextrose filler. After the pre-treatment visits participants will take one pill of SUV at the Acute Drug Challenge under medical supervision. Ninety minutes post ingestion participants will complete an EMG. Laboratory assessments will occur during peak concentration, 2 hours post-ingestion. At the end of the visit, participants will be given a blister pack with 28 pills. Participants will be instructed to take one pill orally about 30 minutes prior to sleep time each night for 28 days. Participants will be provided education about common side effects. Participants will complete daily surveys to monitor side effects and potential drug-drug interactions. At the end of the 28 days, participants will complete post-treatment lab visits.
OTHER	Placebo	This study is a double-blind study. Participants will complete an initial screening visit and pre-treatment lab visits (EMG, fMRI). The placebo pill will be identical in appearance to suvorexant but will contain only dextrose. Following the pre-treatment visits, participants will take one pill at the Acute Drug Challenge under medical supervision. Ninety minutes post ingestion participants will complete the EMG paradigm. At the end of the visit participants will be provided a blister pack with 28 pills. Participants will be instructed to take one pill orally about 30 minutes prior to sleep time each night for 28 days. Participants will be provided education about common side effects. Participants will complete daily surveys to monitor side. At the end of the 28 days, participants will complete post-treatment lab visits.

Timeline

• Start date: 2022-11-29
• Primary completion: 2024-08-01
• Completion: 2024-08-01
• First posted: 2022-12-19
• Last updated: 2025-10-30
• Results posted: 2025-10-30

Locations

1 site across 1 country: United States

Regulatory

• FDA-regulated drug study